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Java Developer
- Location: Manassas, Virginia 20110
- Work model: On-site
- Posted 4 weeks ago
- Job ID: JPC - 209518
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Job Description
Java Developer - Mid-to-Front-End Stack (DoD Secret Clearance Required)
Location: Manassas, VA | Job Type: Contract
About the Role
Join a high-impact team building critical software solutions for defense and national security. As a Java Developer, you will leverage your Linux/Unix expertise and Java development skills to design, integrate, and enhance mid-to-front-end applications. This role offers exposure to advanced technologies and a clear path for career growth in a secure, mission-driven environment.
Responsibilities
- Develop, test, and maintain Java-based applications with a focus on multithreading and performance optimization
- Integrate and troubleshoot software systems within Linux/Unix environments
- Refactor legacy codebases to improve system reliability and scalability
- Collaborate with cross-functional teams to deliver robust software solutions
- Participate in the full software development lifecycle using Agile methodologies
- Ensure software compliance with Department of Defense standards and security protocols
Required Skills and Experience
- B.S. degree in Computer Science, Software/Computer/Electrical Engineering, or related STEM field
- 2+ years of hands-on Java development, including multithreading
- Strong Linux/Unix development, integration, and troubleshooting background
- Proficient in software integration, testing, and refactoring
- US Citizenship and ability to obtain/maintain DoD Secret clearance (required)
- Experience with Bash scripting
Preferred Skills
- Advanced Java multithreading proficiency
- Database experience with MongoDB, PostgreSQL, or similar
- Familiarity with inter-process messaging (gRPC, Artemis)
- UI development using JavaFX or Swing
- Knowledge of reactive programming (RxJava, Kotlin Coroutines, Flow)
- Performance-tuning tools (JVisualVM, JConsole, JProfiler)
- Containerization and orchestration (Docker, Kubernetes)
- Agile full-lifecycle development experience
- 3+ years in Linux, scripting/software development, and configuration management
Benefits
- Opportunity to work on mission-critical defense projects
- Exposure to cutting-edge technologies and tools
- Career advancement within a secure, growth-oriented organization
- Collaborative, innovative work environment
- Competitive compensation
How to Apply
Ready to advance your Java development career in a high-impact sector? Apply now by submitting your updated resume. Candidates must be authorized to work in the United States and be able to obtain/maintain a DoD Secret clearance.
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Job details
Job ID JPC - 209518
Location Manassas, Virginia, United States
Work Model On-site
Job Type Contract
Posted September 16, 2026
Skills Candidates must be able to obtain and/or maintain a Department of Defense Secret clearance as a condition and continuation of employment Strong Linux/Unix development integration and troubleshooting background· Proven Java development experience including multithreading· Ability to integrate test Troubleshoot and refactor software systems
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